Spares

If, after incorporation of the modification required by Requirement 1(b) of this Directive, it becomes necessary to install a thrust reverser assembly that does not have the TRAS locks installed, the aeroplane may be dispatched in accordance with the conditions and limitations specified in the MEL approved for that aeroplane by registration mark, provided that the thrust reverser assembly that does not have the TRAS locks installed is deactivated in accordance with approved maintenance data.

No more than one thrust reverser on any aeroplane may be deactivated under the provisions of this paragraph. Within 10 days after deactivation of the thrust reverser, install a thrust reverser assembly that has the TRAS locks installed, reactivate the thrust reverser and functionally test in accordance with the appropriate approved maintenance data. Repair in accordance with the procedures specified in the appropriate approved maintenance data if any discrepancy is detected while carrying out the tests.